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20130115
20130123
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who wants to use digital download to make his own assault weapons. >> science fiction has become reality. all it takes is some liquid plastic and a state of the art 3 the printer to produce the parts needed to make an assault rifle -- stated the art -- state-of- the-art 3-d printer. the internet provided the templates needed. his idea of a free society is one where everyone can make their own weapons. >> we have seen this shooting. this shooting will probably end with the sandy hook shooting. the shooting will probably end with legislation banning this type of firearm, right? this file will still be on line. you see what i'm saying? it will still be able to reproduce. if you cannot buy it in store, look how much this project is important. >> the shafts needs time to dry. we will visit again tomorrow when cody will show us how to shoot with it, but for now, it is off to latexes gun show -- a texas gun show. gun sales spike in the wake of mass shootings. people want to show what they have and stock up on the latest gear. organizers did not allow us to film inside. >> evil does not
's research bases in antarctica. during the summer, we can have more than 100 people here. most of the science is done in the summer. that's when the animals are here. there's more opportunity to work. >> reporter: the experts are trying to understand the impact of climate change by examining links between ice volume and wildlife. this unmanned apparatus can check the condition of under water ice. it can precisely measure thickness and record changes in volume. scientists also use krill as a sort of canary in a coal mine. the small crustaceans live below the ice. estimates suggest their population is in decline. researchers artificially changed the environment to monitor the impact on the crustaceans. they're trying to find out if the thinning of the ice could affect krill numbers. bigger animals at the south pole provide even more data. scientists in the university of tasmania have attached small devices on elephant seals to record their movements and the temperature of the sea where they swim. they're aiming to determine how changes in the ice volume and water temperature affect behavior. >>
. >> no single person can train all the math and science teachers we'll need to equip our children for the future. or build the roads and networks and research labs that will bring new jobs and businesses to our shores. now, more than ever, we must do these things together as one nation and one people. >> obama begins his second term with several battles looming. he'll try to work with republicans in the house of representatives to revamp gun control laws and avoid defaulting on the national debt. ♪ the rockets red glare ♪ the bombs bursting in air >> pop star beyonce sang the national anthem. her performance capped off the official proceedings ahead of the inaugural parade. then the president walked the capitol route from the building to the white house. the inauguration four years ago drew almost 2 million people. this time an estimated 475,000 turned out. >>> prime minister abdelmalek sellal says 37 foreign hostages have been confirmed dead in the eastern city of in amenas. sellal said the victims were from at least eight countries. most of the terrorists were militants from east algeria o
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